Pulmotor.



Patented Sept. 5, 1916.

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J. H. PIERPONI-r PULMOTOR. I APPLICATION FILED MAY 31 1916- PatentedSept. 5, 1916.

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JURIAH HARRIS rrnnroivr, or PENSACOLA, FLORIDA.

PULMOTOR.

Specification of Letters Patent.

Patented Sept. 5, 1916.

Application filed May 3, 1916. Serial No. 95,189.

To all whom it may concern: 7

Be it known that I, JURIAH H. PIERPONT, a citizen of the United States,residing at Pensacola, in the county of Escambia, State of Florida, haveinvented a new and useful Pulmotor; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to a pulmotor, particularly adapted forresuscitating persons from which life is supposedly extinct.

One of the objects of the invention is to improve, simplify and rendermore practical the structure of pulmotor in the application of J. H.Pierpont filed June 15, 1915, Serial No. 34,212, and which ap licationhas matured into Patent, No. 1,17 ,208, dated 28th day of March 1916.

A further object of the invention is to provide improved means adaptedfor use in connection with the pulmotor set forth and claimed in theabove patent, whereby the air in the lungs may be withdrawn, and oxygenor oxygenated air forced therein,the operation being intermittently.

In practical fields the details of construction may necessitatealterations, falling within the scope of what is claimed.

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings: Figure 1 is a View in perspective of the improvedpulmotor, illustrating the application and use of tlie same. Fig. 2 is alongitudinal sectional view through the pulmotor. Fig. 3 is a sectionalview of the oxygen tank. Fig. 4 is a sectional View on line 4.-4 of Fig.2. Fig. 5 is a sectional view on line 55 of Fig. 4. Fig. 6 is asectional view on line 6-6 of Fig. 4. Fig. 7 is a perspective view ofthe plurality of rods 16, showing the eyes 16 Fig. 8 is a detailperspective view of the parts of the valve in the upper wall 3 of thebellows.

Referring more especially to the drawings, 1 designates an improvedbellows as a whole comprising the upper and lower walls 3 and 4, whichare constructed of suitable yieldable or spring sheet metal and havingtheir end portions 6 connected by means of rivets 5 t0 the substantiallyU-shaped plates 7, which may be stamped or otherwise formed from springsheet metal. -The upper and lower walls 3 an 4 may be any s itableshape, preferably as shown in plan view in Fig. '2, 1n "other words,substantially pearshaped. The end portions 8 of the upper the upperandlower walls 3 and 4 may be moved toward and from each other., Thesides 11 and 12 merge together, by virtue of the curved wall 13.v Theinterior of the bellows is divided into two compartments 14 and 15, byvirtue of a partition wall 16, which is also constructed of heavyleather or other suitable material. The partition wall 16 is likewiseaccordion plaited or constructed with convolutions, so as to crush andexpand edgewise incident to the upper and lower. walls 3 and 4 movingtoward and from each other. i

The U -shaped plate or member 7 is connected to the tubes or pipes 17and 18, the

tube 17 being in communication with the compartment 14, while the tube18 communicate's with the compartment 15. The tube 18 merges into asuitable valve casing 19 similar to that shown in the above said patent.The tube 17 communicates with the interior of the valve casing 19 at apoint substantially midway the ends of said casing as shown. A tube orpipe 20 connects to the valve casing 19, and is in communication withsaid casing, a trifle above the valve 21, which is mounted in the casing'19. Said valve has its stem 22 guided in a suitable opening 23 of theclosure 24 of the upper end of the casing 19, there being a suitablecoil spring 25 interposed between the closure 24 (which is threaded tothe casing 19) and the disk 26, which is carried by the valve stem 22,so as to hold the valve 21 normally in engagement with its seat 27. Asuitable flexible tube 28 is connected to the tube 20 at one end, andhas its other end connected to a suitable hood 29. This hood or mask 29may be of any suitable construction, preferably as illustrated in theaforesaid fabric, and is provided with a suitable strap 30, for holdingthe mask or hood on the face of the patient or person beingresuscitated.

The tubular handles 9 and 10 consist of two' sections 31 and 32, and 33and 34. The sections 31 and. 32 are threaded together as shown, so as tosecure a suitable check valve 235 between the joined ends, so that thecheck valve will open in the direction as indicated in dotted lines. Thesections 33 and iii are threaded together as illustrated, and a suitablecheck valve 36 is held between the adjacent ends of the sections andfill, so that the check valve 36 may open in the direction as indicatedin full lines. In other words, the valves 35 and 30 open in oppositedirections. A flexible tube 38 is connected to the tubular handle 9 byIn :ans oi a nipple 39, which flexible tube 39 is in turn connected toa. suitable tank 40 designed to contain oxygen or oxygenated air, therebeing a suitable valve 41, whereby the oxygen or oxygenated air may becontrolled. As before stated, the valves and all open in oppositedirections, so that upon forcing the upper and lower walls 3 and a ofthe bellows toward each other, the oxygen (which has been drawn into thecompartment previously) will be forced against the valve :31, raising itsufficiently past the port 4-3, thereby allowing the oxygen to passthrough the tube and the tube 28, and into the mask or hood 29, where itenters the nose of the person and into the lungs. Upon moving the upperand lower walls 3 and t apart, the valves 21 and 3G immediately close,and there is a suction created in the compartment 1i, which sucks ordraws out the stagnantair or oxygen, and into the compartment 14, andfrom which compartment said stagnant air escapes, when the valve opens,upon bringing the upper and lower walls 3 and l of the bellows towardeach other. The upper and lower walls 3 and st of the bellows may beoperated as rapid or as slow as necessary.

This pulmotor is designed for use in the doctor's or physicians ofiiee,in which case the tank 4-0 is preferably used, but should it be desiredto use the pulmotor outside the otlice, a portable tank *ll may be used,such as shown in the aforesaid patent, and which may be suspended fromthe neck of the doctor or physician, and in this case the tube 538 maybe connected to the tube -l5 of the portable tank l4. Carried by the*all i of the bellows near the handle 10 is a curved thrarded rod 46,which passes through an opening 47 in the wall 3, there being a wingednut 48 threaded upon the rod 4-6, for limiting the upper and lower walls3 and l in their movements from each other.

hen the instrument or pulmotor is applied the bellows is opened, thusdrawing vitiated air out of the lungs by creating a vacuum in thechamber 14:, which is already in open communication with the lungs. Atthe same time the vacuum created in the chamber 15 d 'aws eitheratmospheric air or oxygen (if the tank is connected for use) which isheld in the chamber 15 until pressure is exerted (compression ofbellows) in which case the contents of chamber 15 are forced into thelungs, the pressure of said contents on said valve 21, causes the valve21 to rise against the action of the spring 25. As soon as pressure isremoved, the valve drops back in place closing the port -13, as far asthe same being in communication with the chamber 15 is concerned, andopening the air channel to the chamber 14-. The bellows is opened andclosed by the operator every three or three and one half seconds, thatis, corresponding to natural breathing. When applying the face mask, theoperator grasps the patients tongue with any suitable or conventionalform of tongue forceps c, and pulls the tongue well out of the mouth,and subsequently closing the mouth down upon the tongue, in which casethe forcops and the extended tongue are entirely outside of the mouth.By this operation the passage through the mouth is closed, but theglottis at the opening of the wind pipe is opened, thereby causing anunobstructed passage through the windpipe and the nose, through whichthe oxygen or atmospheric air may be forced. The mask fits over all ofthe nose and mouth, having one edge at the bridge of the nose the otheredge in the depression between the lower lip and chin, the singleelastic strap of the mask is then passed around the head, holding themask securely in place.

Shown in Fig. 1, there is a bag, constructed of any suitable material,such as rubber or the like, in the tube or pipe 38, which constitutes anauxiliary reservoir 0. When resuscitating a body, the operator opens thevalve 11, thereby allowing such air or oxygen, that is thoughtsuilicient to restore life to the body, to enter the auxiliaryreservoir, then the valve l1 may be closed. However, if this quantity ofoxygen is not sullicient, the operator allows more oxygen to enter thesame. If desired a similar bag or auxiliary reservoir 0 may be connectedbetween the bellows and the portable tank ll, and used in the samemanner.

As stated before a valve rod 22 is guided in the opening 2 of the cap orclosure 24, and adjoining the opening 93 are two radially disposedopenings or slots 50. Carried by the rod 22 is a lug 51 of suiiicientsize as to pass through either of the radial openings or slots 50. Forinstance, the valve 2-1 may be raised suiiieiently above the port l3 ofthe tube 20 so that the lug 51 will pass through one or the other of theslots or openings 50, after which the rod 212 may be given a partialturn, thereby supporting the valve in a raised position. The valve normally rests upon the shoulder or valve seat 27, and when in thisposition the stagnant air is drawn or sucked from thelungs of the personor patient, through the tubes20 and 28. When the valve is in a raisedposition, as indicated in dotted lines in Fig. 2, the doctor orphysician may work the bellows once, twice or three times in quicksuccession, thereby forcing a good supply of oxygen or oxygenated airinto the lungs, then the valve may be released and said stagnant air isdrawn.

The wall 16 of the bellows is constructed of two thicknesses of heavyleather 16*, which are connected together adhesively. However, arrangedbetween these two pieces of leather 16 and vulcanized therein is aseries of rods 16", the ends 16 of which are secured in any suitablemanner to the wall 7 a of the bellows. The other ends of said rodsextend through the wall 16 of the bellows and terminate in eyes 16through which the rod 46 extends, thereby acting as guides for the wall16 as the bellows is collapsed and distended. The rod 46 consists of twosections 4:6 and 46 which are pivotally united by the pin 46, so thatwhen the bellows is collapsed after being used and set aside, thesection 46* of the rod may be folded upon the upper wall 3 of thebellows. The upper wall 3 is provided with a hollow offset 3 the wall ofwhich is provided with apertures 3 there being a valve cap 3 connectedto the offset by the pin 8 and having its flange fitting down over the011'- set, so as to rotate thereon. The valve cap 3 is provided with aplurality of openings or apertures 3, in order to be moved into and outof registration with the apertures or openings 3*. The purpose of saidcap and said apertures, is that when the person begins to breathe, theapertures 3 are thrown into registration with the apertures 3", so thatthe person may breathe fresh air, thereby eliminating the necessity ofoperating the bellows.

The invention having been set forth, what is claimed as new and usefulis:

1. A pulmotor comprising in combination with a face mask, a valve casingand a valve seat therein, and valve to cooperate with the seat, a tubeconnected to and in communication with the casing, a bellows having twocompartments, one in communication with the casing immediately under thevalve, the other being in communication with said tube, a tubularconnection extending from the mask, and in turn connecting to and beingin communication with the valve casing immediately above the valve andspaced below where the first tube communicates with the valve casing, anoxygen reservoir, tubular connections between the reservoir and one ofthe compartments of the bellows, the other compartment of the bellowshaving a valve controlled exit passage.

2. A pulmotor comprising in combination with a face mask, a valve casingand a valve seat therein, and valve to cooperate with the seat, a tubeconnected to and in communication with the casing, a bellows having twocompartments, one in communication with the casing immediately under thevalve, the other being in communication with said tube, a tubularconnection extending from the mask, and in turn connecting to and beingin communication with the valve casing immediately above the valve andspaced below where the first tube communicates with the valve casing,said bellows having a pair of tubular handles, one being incommunication with one of the compartments and provided with a checkvalve and acting as an air escape passage from said compartment, theother tubular handle'being in communication with the other compartment,an oxygen reservoir, a tubular connection between the reservoir and thelast mentioned tubular handle. which last mentioned tubular handle ispro-- vided with a check valve.

3. A pulmotor comprising in combination with a face mask, a valve casingand a valve seat therein, and valve to cooperate with the seat, a tubeconnected to and in communication with the casing, a bellows having twocompartments, one in communication with the casing immediately under thevalve, the other being in communication with said tube, a tubularconnection extending from the mask, and in turn connecting to and beingin communication with the valve casing immediately above the valve andspaced below where the first tube communicates with the valve casing,said bellows having a pair of tubular handles, one being incommunication with one of the compartments and provided with a checkvalve and acting as an air escape passage from said compartment, theother tubular handle being in communication with the other compartment,an oxygen reservoir, a tubular connection between the reservoir and thelast mentioned tubular handle, which last mentioned tubular handle isprovided with a check valve, said bellows comprisingopposing flexiblemovable walls, and means for limiting said walls in their outwardmovements.

4?. In a pulmotor, the combination of a face mask and a casing connectedthereto, of a bellows having two compartments having passages ofcommunication with the casing, one to force oxygen through the casingand into the mask and the lungs, the other to draw the stagnant air, avalve in the casing for controlling said passages of communication, saidcompartments having tubular handles, one acting as air escaping means,an oxygen reservoir, and connections between the other handle and theoxygen reservoir, and means for controlling the movements of theopposite movable sides of the bellows.

5. In a pulmotor, the combination of a face mask, and a bellows havingtwo compartments, of means of communication between the mask and the twocompartments of the bellows, and means for controlling the aforesaidmeans whereby oxygen from one compartment may be forced into the maskand the lungs upon depressing the bellows, and the stagnant air drawnfrom the lungs into the other compartment upon expansion of the bellows,means whereby oxygen is permitted to enter one compartment of thebellows, means whereb t the stagnant air is allowed to escape from theother compartment, said bellows having an intermediate collapsible walldividing said bellows into said two compartments, said collapsible wallhaving reinforcing means terminating in rearwardly extending eyes, acurved rod connected to one side of the bellows and extending throughsaid eyes, and means threaded upon the rod for lim iting the oppositemovable sides of the bellows in their movements.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JURIAH HARRIS PIERPONT.

\Vitnesses D. C. TI-IoMrsoN, J. L. Cano.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. 0.

